Firefox Community Forum

Subject: Help recovering old Firefox Sync data using my Recovery Key

Hello Mozilla Support,

I’m trying to recover my old Firefox Sync data, especially my bookmarks and saved passwords.

I still have an Account Recovery Key that I saved on August 27, 2025. However, after signing in to my Mozilla account today, my account page shows “Account recovery key: Not set”, and syncing does not restore my old bookmarks or passwords.

I may have reset or changed my Mozilla account password today without using the old Recovery Key during the process.

Could you please confirm:

Is there any way to use my old Recovery Key now to recover the previously encrypted Firefox Sync data? Is the old Sync data still retained on Mozilla’s servers in any recoverable form? Is there any other recovery procedure available for bookmarks, passwords, or previous Sync data?

I still have access to the same Mozilla account and the original Recovery Key file. I will not send the Recovery Key itself unless there is an official secure procedure that requires it.

I recently got a new laptop. The FIREFOX app on my new laptop doesn't have File Edit View Bookmarks Profiles Tools and Help on the very top. I can't find my bookmarks with the folders I created.

My Firefox created a new profile and reset everything. I was able to go back and locate my bookmarks and restore them, but my menu bar is reset, my history and saved passwords etc are all gone.

My old laptop died, stranding my Firefox profile (including bookmarks and Login credentials for many sites). I am able to connect the old laptop's HDD via USB to port the old profile data to the new laptop, but I am afraid that copying the older files to the new profile will overwrite the newer profile data. I would like to create a second profile, in which to store the old data, in the newer laptop's instantiation of Firefox, but I don't see any information online about doing this. Is it possible to create multiple profiles in Firefox for this purpose? Thank you

it looks like mozillo ambushed me, did away with all of my setting I spent years getting where I wanted them and left a folder called Old firefox data on my desk top. how do I make it look and act like the old firefox? I do not want the side bar I want the icons on the same line as the search bar. I want firefox to be my default everything like it was. I hate edge but it seams the only way i could get rid of it was to uninsal firefox and reintal this new pink firefox home page. I want my home page to be foxnews. how do I restore everything from teh old data filke to this confusing new page?

I'm trying to restore bookmarks after latest update. I get to the Import and Backup dropdown and pick Restore. there is nothing listed. I can go into my "C" Drive and find my "bookmarkbackups" folder and see the files. How can I get it reinstalled?

I realize there have been several questions on this topic, even with the same subject heading.

The popup generally appears if you're trying to exit or refresh a page but haven't hit post or submit after entering data into a field. It's a good warning in case you've forgotten to do just that. I accidentally restarted Firefox after an update, and when I returned to the site I was working on I got this popup. Which makes sense, because I had entered in a ton of data and hadn't submitted it.

However, the page that I was returned to wasn't the one into which I'd entered my data - it was more of a home page for the website. I suspect this is a lost cause, but ... is it at all possible that the browser actually has that data saved somewhere and is waiting for me to complete submitting it? Or is this just a false positive?

I am attempting to copy a FF profile from a Windows 11 machine I created it and am using it on to a brand new windows 11 machine on which I have also just installed FF on. Both machines are at FF 150.0.3. I have done a search online for the methods to do this but they have both failed for me.

The first one I tried was simply copying the profile from the existing (source) machine to the profile folder in the new machine however FF never recognized the copied profile on the new machine (I am using profile manager on both machines).

I then tried copying the profile using the method we used to use a while back to copy profiles which is to let profile manager create a new profile in the new machine, open FF so that it creates that new profile in the profiles folder then delete the contents of that profile leaving it as an empty profile (with the name of the newly created FF profile). Then, I selected and copied the *entire contents* of the source profile I was trying to copy and pasted them into the newly created profile I had just zero'ed out on the new machine so that the new profile now had the exact same contents as the source profile. I knew this copy was successful because it took a while to copy all of the data from the source profile to the new profile and the indicator showed it copying.

Again, FF did not recognize the new profile when I opened FF with the name of the new profile in the prof mgr.t.

Could someone tell me what I am doing wrong or what the problem may be? One problem I had when I first copied the source profile to my 32GB USB drive was a message saying "inbox folder is too big for destination system. " The source profile is 12.72 GB so there is plenty of room on the USB drive for it to fit. I have no idea why FF would have an inbox file so I just skipped it. The rest of the profile copied to completion once I did that but its size after copying was now only 7.65 GB, about 5 GB less than the original. Could this be my problem and if so, how do I fix it? Thanks for any help.

I am changing from Win 11 to Linux Mint and want to use as much of my Win Ff profile there... What can I trnansfert, and how, where will I find Ff extensions for Linux?

Thank you

With the new Firefox updates I no longer see my bookmarks. I tried the FAQ's and suggestions but I don't understand them. I need my bookmarks back ASAP! Tried ctrl-shift-B it did nothing.

I lost all my data after installation of new firefox. I have lots of important data in that profile.

I forgot the password to sign in and when I reset, a new profile was created for me and all my data are gone.

Now, I even know the original password. I did not know, I will lose my data. How can I get my data back? Please help.

Windows 11 Firefox crashed on opening continuously so unable to safe open etc. Did update intel graphics to no avail. Uninstalled in add programs in settings. Did not choose to delete data. Reinstalled and now can't find my profile.